Chaeles max sombaet



UNITED STATES V.PATENT OFFICE.

cHARLEs MAXY soMBAR'r, 0E MAGDEBURG, GERMANY.

GAS-ENGINE.

SPECIFICATION forming part of Letters Patent No. 260,620, dated July 4, 1882.

Application mea June 13, 188x.

' cylinder and forming thereon annular projections to allow of a circulation of air between 'the two; and, secondly, in combining a sievelike perforated diskfwith'the air-valve chamber ot the engine to prevent the destruction of the valve-disk.

In the accompanying drawings,Figures 1, 2, and 3 are sectional views of a Bisschop gas. engine containing my improvements; Figs. 4 and 5, views of the piston-valve casing B detached, and Fig. 6 an enlarged sectional view ofthe air-inlet chamber and valve.

rIhe main cylinder A, piston, pistonrod, connecting-rod, and crank-shaft are the same as in the ordinary form ot' the VBisschop gasengine. Y

The piston-valve casingB, instead of being formed as a boss cast on the cylinder. of the engine, is cast separately, and is screwed to a faced surface on the cylinder A,- as shown in the drawings. y The object of this is to permit the removal of this valve-casing for reborin g, repairs, or replacing without disturbing the main working parts of the engine, as would be the case where the valve-casing forms part of the main cylinder.

In order vto prevent as much as possible the transmission of heat from the working-cylinder to the piston-valve casing B, the faced surface a of the latterV is formed of annular projections which leave between them and the corresponding face of the cylinder A suicient space, Figs. 2, 4, and 5, to admit ot the air pa'slsing through, thus keeping the valve casin g coo 1n order to 'prevent the india-rubber disk in the air-valve chamber, Fig. from being so easily burned or destroyed by the flame from (No model.) Patented in Germany'October 26, 1881, No. 14,080, and in England January 25, 1882, No. 320.-

the eXplosion,I make use of a finely-perforated iron disk, as illustrated in Fig. 6 ofthe annexed drawings. The iron disk @contains tine holes, and is placed just behind the plate j', which limits the lift of the india-rubber disk. This perforatedvdisk e atfords the requisite passage for the entrance of' the air, but deadens the force or effect of the back flame at the moment ofthe explosion, so that the caoutchouc, ot' which the air-valve is composed, is not softened and destroyed to such an extent aswonld otherwise be the case.

In order to afford astrong and continuous bearing-surface for the crank-shaft, I prefer to apply the eccentric C, Fig. 1', to the shaft at the end of the bearing, as indicated in Fig. 2, instead of in a slot inthe bracket, as in one otl the ordinary forms ofthe Bisschop engine and as indicated in Fig.`2. In this case the connection of the eccentric C with the fly-wheel is effected by means of apin, ,'Fig 1, adapted to a hole in the nave of the ily-wheel and serving as a driver, so that the Veccentric maintains an invariable position in respect to the crank. Its motion is transmitted to the piston-valve through the medium ot' the eccentric-rod b, the double-armed lever c, and 'valve-rod d, Figs. 1 and 2. `By securing the eccentric-rod b to the strap of the eccentric C by two nuts, means are provided for altering or exactly adjusting the relative position of the pistonvalve to the eccentric.

I claim as my invention- 1. 'lhe combination of the cylinder of a Bisschop gas-engine with a slide-valve casing, B, cast separately theret'romtand having projecting annular faced surfaces, as and for the purpose described.

2. The combination of the air-inlet of a gasenginc and rubber valve with a protecting perforated disk, e, in the lnir-chamber, substantially. as set forth.

In testimony whereof' I have signed my name to this specification in the presence of two subscribing witnesses.

CHARLES MAX SOMBAR'I.

Witnesses:

PAUL MLLER, H. ScnRADE. 

